Electromagnetic axle puller



May 9, 1933. w- N. KOCH ET AL ELECTROMAGNETIC AXLE FULLER Filed May l2, 1932 lll. n. Il.

Patented May 9, 1933 WALTER N. noon, QF JAMAICA, NEW Yoan, ,AND McEwen-n; LANirz, or frEnNEcx;

NEW JERSEY EEECTEOMAGNETIC AXLE "PUL'LEE' Application filed 12,

A Thepobjects of this 'invention are to l-prevvidefa practicaltoolifor removing the broken parte fof an automobile rear faXle, which -can `be readily entered `aint() and 4Withdrawn through fthe .axle housing, past lthe @bearings and other projections or shoulders; Vwhich p can ,befcontrol-led to apply :the fpulling force .at cXa-ct-lythe desiredtime and will haye sufli- Vci,ente-power to take 'out the :broken lpieces of axle 'erfother parts vand which Will'have the jelectricalparts all protected against Wear iandjthe injurious effects of Water, grease,

loil ,and heat, etc. and Which, in addition Will Ibe `relatively simple, inexpensive, practical and i efficient.

The vobjects mentioned and kother desirable hrobjects are Iattained by the novel fea- .turesof construction, combinations and redations of par-.ts hereinafter describechillustratedandbroadly claimed. y, The drawing' `accornpanying and forming ypart of the specification illustrates -one prac- .tical embodiment of the invention, but vvit should -be understood as regards such i1-lus- .tration that the actual structure may be modified-and changed in certain respects, all

Within the true intent and broad scope ofthe claims. Y 4 Y Y Fgig. `1..is aside View of the ,toolillustrating .use of ithe same as afnaxlepullerg p V .1? jgs. Zand 3 areienlargedbroken sectional views showing 4the construction 4at ,opposite ends of the tool; l

:Figll is intend view .of the magnetic head structure Vivith the flanges which confinethe coilremoved; l Y l i Figsf .and 6 are broken .part sectionaldetails of different forms ofinagnetic piclups.

'As .illustrated in Fig. 1, the device will ,be ,seen .to consist ofa relatively 1long rigid tubular stock or handle 7 carrying a magnetizing Shead at .one .end and .provided at the opposite end with@ hand .grip 9 containing fa sivitchand from which a current carrying :cable 10 .is extended, carrying, in this instance, terminal `.gripping clamps 11, 12 :for .engagement with thepolesof the. storagel @battery-or other-currentsource 13. {The magnetiz'ng head is shown as consisting of ,a magnetic core 114 having a reduced 1932. `Serial `'12e-(10,818.

4neck 15 `entered .in the endl of th@J ,tubular 1'*- .stock and secured there bye-cross pin -or key 1 6, the vfull fdiameter `portion]offthe Core carrymgfamagnetizing Winding 17 `insulated therefrom -by anfinsuflating sleevefflS and vin- V1,

sulatingend heads orwvashers 19;, 20, said insulating 'sleeve :and heads -forming in eiiz'e'ct a spool carrying the Winding. Forflnefchanical andzother protection, the Windingis :shown .as covered by ,a .surrounding sleeve of 4insulatingmateriald 21 heldsbetween the insulatingfheadsulQ, v20 and-,metallic Washers or headsr22, `23 :are shown `.engaged ,on the core, loutside the Washers 19, 20 and .rigidly retaining the latter in pcsition, The washer y.22 is shown as forced over the lreduced shank portion 15 -ofthe `cere against the shoulder 24 and the other; Washer 23 is shown asforced Y1over' the body-of the core with a solid drive iit. VIn additiomthe outerconiiningwasher p 23jmay be rlocled-in'p'lace by a removable magnetic ytip 25 partly overstanding thesame and shown as heldin place byengagement over a screw Athreaded outer end -port'ionf26 on .the core.

L i The screwy connectedltip `isa desirablefeay Ature, enabling the `substitut-,ion ofutipsof differ-.ent v magnetic -permeability-v and different shapes for .special uses. In Figs. Land 3, Fthe removable tip is yof truste-conical shape e suited 3 to pickingup the broken portions of a rear :axle Whiledn Fig; 5 ,vthereqis shown a cylii-idi-icalt,torni of tip 27 having a ,spherical socket 28 adapted 'to lit, a Emore er .less roundedobject.4 y :g

In l*`-i g 6 anangularly turned form of tip 29 is illustrated adapted to be screwedon to tool.

the axle housing.

handle. One wire of the cable is connected with this spring contact and the other wire of the cable is simply a through continuation of Vments or halves of the handle are shown as secured together by the bolts 39 which extend through openings in the tubular stock to lock the handle parts together and to the end of the stock. A bushing 40 lfor the cable is shown caught between the two halves of the handle for gripping and insulating the cable where it emerges from the handle.

The tubular stock may be made of aluminum to make the `tool light enough for ordi'- nary handling and so as to insure concentration of the'magnetic energy in the tip of the This stock also is rigid and strong so asto serve as a lever'for working the tool about in picking up broken or lostmagnetic particles.

In use of the device as an axle puller, the tool is inserted into the axle housing with the current either off or on, orintermittently oi and on, as the best judgment dictates. In many cases the current isV not turned on until the tip of the tool makes Vsolid Contact with the end of the axle and then when the switch is closed, a magnetic coupling is effected with the broken axle part which then can be withdrawn, the circuit being kept closed during such latter operation. The small diameter of the stock permits the tool being twisted and turned about, beyond the outer wheel bearing, toreach down into the axle housing for picking up smaller broken pieces. Theilanges at the ends of the coilare shown as bevelled or rounded at 41 to enable thedevice'to readily ride over shoulders or other obstructions in The magnet coil is fully protected against abrasion and wear and guarded against the effects of'water, oil, etc.

' The entire structure is sturdy and strong and may be used as a prod to work parts loose so that theywill comeout by the magnetic pull.

At the same time, in case of necessity, the de# vice can be readily taken apart, for instance for the substitution of a different magnetic head of greater or less pulling power or for Vservice onE different voltages. VJ Also such separation can be 'ei'ected without twisting the wires asupon removal of the transverse fastenings for the magnetic head and handle parts they may be separated from the ends ofthe stock without any twisting movement.

Ther fastening of parts also is such that the device cannot pull apart under vthe maximum magnetic pull. The device is a complete'self-V lcontained unit and is under instant .control at all times, the switch being so placed in the handle grip that it is operable by the hand on such grip'. V

What is claimed is:

1. An electromagnetic axle puller, comprising a long tubular stock of aluminum or similar light rigid non-magnetic material, a magnetic core having a reduced shank portion secured in one end of said stock, said shank being grooved and the bodyof the core being kerfed in communication with the grooved portion, a magnet ywinding on thev core having supply wiringyextending thro-ugh the kerfed and grooved portions of the core into and through the tubular stock, a hollow grip handle secured to the opposite end of the tubular stock, a switch housed within said hollow handle and having an exposed operating button, the wiring for the Ymagnet winding being connected withsaid switch within the hollowhandleand service wiring connected with the switch, extending from the handle and provided with suitable terminal means for communication with an electrical source. 1

2. An electromagnetic axle puller, comprising a long tubular stock of aluminum or similar light rigid non-magneticy material, a. magnetic core having a reduced shank 'portion secured in one end of said stock, said 4shankbeing grooved and the body ofthe core being kerfed in communication with the grooved portion, a magnet winding on the core having supply wiring extending through the kerfed and grooved portions of the `core into and through the tubular stock,

"a hollow grip handle secured to the opposite end ofthe tubular stock, a switch housed within said hollow handle and having an exposed operating button, the wiring for the magnet winding being connected with said switch within the hollow handle and service Y wiring connected with the switch, extending Vfrom the'handle and provided with suitable terminal means for communication with an electrical source, a coil confining washer about the shank ofthe core and interposed vbetween thevgrooved shank portion and the through the keri'edv and'grooved portions of thecore into and through'the tubular stock, a hollow grip i handle secured to the'opposite end of thel tubular stock, a switch housed within said hollow handle and having an exposed operating button, the wiring for the magnet winding'being connected withY said switch withinthe khollow handle and service` `wiring connected with the switch, extending from. the handleand provided with suitable terminalv means1for= communication with an electrical source, a1 coil confining'V washer about the shank .ofthe coreand'fintenposed between the grooved shankf portion and the kerfed' bod7 portion offthecore, a coil confining washer secured cul-the core at the opposite end ofi the magnet winding and' amag-, netic tip removably engaged; withf the end of` the corefandloverstanding said lastmenf tioned coil. confiningwasher. Y r

41 An. electromagneticnaxle pulling tool', comprising a long tubular stock, a hollow sectionalV handle engageda over one Vendl of; said: tubular stock, through bolts detachably securingfthesectionsof said handle together and extending.4 through the end: portion off the tubular.` stock4 to prevent separation of the handle romzthel stockbyv longitudinal pull, a switch. enclosed Within :the hollow handle andhavingan exposedi controlele-` ment, service wiringextendi,ngfro1n.the handile, magnet. Wiringl extending fro1nthe switch through `the hollow` `handle and tubu-` larl stock, a magnetic core having a reduced shank-portion secured iintheend of `the stock andlhaving passes for 'the magnet wiring extending from within thev ytubular stock: to .the core outside-.the tubular stock,.a magnet.y coil on the core conneotedf with saidpwiring and coil' protective flanges 'fixed on the core Latcpposite ends of. said coil;

An electromagnetic axle .pulling tool; comprising a long.tubular` stock, a. hollow` sectional handle engaged over one end ol'.v said tubular stock,.through-bolts .detachablya securing the sections of' said handle 4,togetlleI-r and' extending-:through the end portionof. the tubular` stock to prevent. separation of, the handle fromv the stockgby longitudinal pull, a switchenclosedi within4 thehollow handle and having an exposed controlelement, service Wiring extending from the handle, magnet wiring extending from; Vthe switch through the hollow: handle and tubu lar` stock, a magnetic coref having a shank portion secured in the end of the stock and having passes for the magnet wiring extending from within the tubular stock to the core outside the tubular stock, a magnet coil on the core connected with said Wiring, coil protective flanges fixed on the core at opposite ends of said coil and interchangeable magnetic tips detachably engageable with the end of the core over the flange at one end of the coil. Y

6. An electromagnetic axle pulling tool, comprising a long tubular stock, a hollow sectional handle engaged over one end of said tubular stock, through bolts detachably securing the sections of said handle together and extending through the end portion of the tubular stock to prevent separation of the handle from the stock by longitudinal pull, a switch enclosed within the hollow handle and 7i. An electromagneticaxle puller,y comprising a rigid tubular stock, a magnetcore having a bodlyportionwith an exposed magnetic tfipat one end and a' reduced/'shank por tionl at the opposite end, said reduced shank portion `loein'gg'entered intone 'endof` the tubularV steelt, said? shankportion and the adjacent body pontionhaving wirel passages therein between-theinterior ofthe vtubular 'stockA andthe body portion-of the core, amagnet windn on said bod-y portion ofy thecore, A

a substantlal casingentirelyV enclosing' :said Winding protecting the samey from mech'ani,` calinjury, oil and grease and the like, wiring extending from the magnet windingthrough theaforesaidpassagesv andthrough! tothe other en'dof thetubular stock, ahollow'handl'esecured' on' the opposite lend' of" the-"tribu lar stock, a switcli vv'f-ithinv said? hollo'wjhandl'e connectedwith the magnet wiring and' ser-vice wiring connected with said switch and extending from the "end ofi-'said handle.

t8.'Anelectromagnetic ,axle puller-g, comprising a" rigid tubular stock, 4a magneticfcore havingabody portion with an exposed mag'- netic tipI at 'one' e'nd and aL reduced-shank portion vatftglie' oppositeend, said' -reduced shank portion being entered andse'curedfin one endof the tubular stock,said`-shank por tionV and? the adjacentfbody portion having wire passages4 therein and extending from the bodyV portion ofthe core Vto the interior ofA the`Y tubular stock, a magnet; Winding" 'on said Vbod-yportion ofthecore, leadwiiesextending-'froidl 'said magnet winding through the passages aforesaid andftliroughthe tubular stock, protective anges Vat oppositefends off-said magnet windin'gja'ndfa casingextendlingbetwen sad. -anges andentireyhcls iilgr'said. magnetr Windingi and protectingfthe ,Saniefrom .inhan-clf1ij11ryt Ola. grease? 9. ,The `heri disolsd! l'tremagnetic, alle Pullr, CQmPriSLis anffelonetedl" rigid .tubular handle, Aafmagnetic core, a neck `portion of yreduced` diameterl at. one end of, said magnetic core and entered in one endfofisad tubular handlev and rigidly secured therein, Sadffnesk partiva har-ine lngtudellyvxf tending groovesin l opposite s idesofj the same praddingA wir@ passes from the magnetic core nto'the adjoinngendrnartion Qi the Ico l tubular handle, a shoulder at the opposite end portion of the magnetic core, a magnetizing winding on the core betweenfsaid shoulder at one end and said reduced neck portion at the opposite end, feed 4wires ex,- tending from said coil 'through said grooves iny the neckportion into thetubular handle, and through saidtubular'handle to thefar end of the same and a protective ,covert over said winding and extending Afromfsaid 'end shoulder back to the junction of the neck portion with the tubular-handle, whereby said winding and allwiring are covered and protected from harm in the necessarily rough usagel of the tool. in 10. The lherein ldisclosed electromagnetic aXle puller, comprising an elongated rigid tubular handle, a. magnetic core having -a neck portion at one endof the same telescopically engaged with one end of said tubular handleand rigidly secured to the latter, said parts having enclosed wire passes extending from the end of the magnetic core int-ofthe adjoining end -portion of the'tubular handle,vwinding confining heads at the ends ofsaid magnetic core, a magnetic windingon the core` between said endV heads,a protective Vsleeve between saidend heads and entirely covering said .winding and feed wires extending from the core vwithin said protective sleeve through the`-A wire .passes aforesaid linto the tubularl handle and through said rigid handle to the far end ofY the same. i .n j v e Y l 11, The herein disclosed electromagnetic axle: puller, comprising c an l elongated rigid tubular; handle, -a magneticl core havingpa neck portion at `one end, of the same vtelescopically engaged withonevend of saidj tu,- bular` handle and rigidly secured to the latter,".said parts having enclosed lwire passes extending from the end of the magnetic core into the adjoining end portion of thevtubularghandle, winding confining lheads at the enjds'of said magnetic core, a magneticwindingon'the core between said end heads,- a protectivesleeve'between said end heads and entirely covering said winding.,l feed wires extending from the core within said protective sleeve through the wire passes aforesaid intothe'tubular yhandle and through said rigid handle to the far end of the same,

y one of theend headsjcomprising a washer engaged on'said neckportion at one end of the core and said neck 'portion'having telescopic engagement with .thetubular handle by'being entered in theend of the same to positionv with the end ofthe ltubular ,handle holding said washer against the-endof the magnetic core. f'

1'2., The herein disclosed',A electromagnetic axlepuller, comprising an elongated rigid tubularfhandle, a magnetic core having a neckportion at one Aendv ofthe same telescopically engaged with one fend of said ,7:

tubular handle and'rigidly securedto the latter, said parts having enclosed wire passes extending from the 'end of the magnetic `core into theadjoining-end portion of the tubular handle, winding confining heads atthe ends of said magneticzcore, a magnetic winding on the core: between said end heads, a protective sleeve `between said end heads and entirely covering said winding, feed wires extending from the core within said protective sleeve throuvhvthe wirel passes aforesaid intoV the.,l tiiliular' handle and throughsaid rigidhandle to the far end of the same, the end head at the free end of the magnetic core comprisingawasher of insulating V:material surrounding ythe 1 core and enclosed within the protectiveI sleeve.V

13.` The herein .disclosed Velectromagnetic axlewpuller, comprising anzelongated rigid tubular handle, af-'magnetic core having a neckportion-at one endnof the' same tele-V scopicallyengaged withg'one end yof said tubular handle;andarigidly'. secured to the latter, said part-s'havingienclosed wire passes extending from the end of the magnetic core into-the adj oining end portion of the tubular handle, winding confining heads at the `ends of said magneticcore, a'magnetic winding on the core between saidend heads, a protective sleeve between said end heads and entirely covering said winding, feed wires extending from the corelwithin said protective sleeve'through the wire passes afore said into thetubular handle and through saidrigid handleto the faiuendofthe same, the free end of the magnetic core having one element' of a screw thread connection outside .the end head thereat and a magnetic tip yhaving-*the corresponding element of a screw thread connection rdetachably engaged with'the first mentioned screw-thread lcone ne'ction.V c

In testimony .whereof we Aaffix Your signa.-

tur'es.` Y c v i WALTER N. KOCH.v MOR-TON LANTZ; 

